Finite element analysis of catastrophic failure of dynamically-loaded countersunk composite fuselage joints

Egan, Brian; McCarthy, Michael A.; Frizzell, Ronan; McCarthy, Conor T.

doi:10.1016/j.compstruct.2015.07.004

Cited by 19 publications

(6 citation statements)

References 27 publications

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“…7 Comparing with results from an explicit dynamics model and an implicit model, 8 researchers used the explicit approach considering its robust contact modeling to model bearing and catastrophic failure of composite joints under quasi-static and dynamical loading. 9,10 Their numerical results demonstrated similar trends with experiments and provided a more accurate model for simulation of countersunk joints shear response. Liu et al 11 developed two three-dimensional explicit FEMs to simulate tensile response of single-lap countersunk bolted joint between composite laminate and steel.…”

Section: Introductionsupporting

confidence: 57%

Experimental and numerical study on bearing failure of countersunk composite–composite and composite–steel joints

Yang

Yue

Geng

et al. 2016

Journal of Composite Materials

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Tensile experiments were conducted on composite–composite joints and composite–steel joints with countersunk bolts while three-dimensional finite element models using progressive damage method on composite were developed to simulate bearing failure of joints. Experimental results showed good repeatability and bearing damage showed obvious difference between the two kinds of joints. Solid elements were chosen to model all the parts and laminates were partitioned into actual number of plies in order to gain accurate stress distribution and damage profile in each ply. A 3D Hashin-type criteria and degradation rules were implemented using a user subroutine in ABAQUS. Numerical results had good agreement with experimental results considering clearance effects. Composite–steel joints showed better carrying capacity than composite–composite joints according to load–displacement curves and damage evolution processes. Delamination were more severe in composite–composite joints indicating that it is necessary to pay attention to designing composite laminates and structures under certain load condition.

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Section: Introductionsupporting

confidence: 57%

Experimental and numerical study on bearing failure of countersunk composite–composite and composite–steel joints

Yang

Yue

Geng

et al. 2016

Journal of Composite Materials

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“…Zhou et al [4][5] investigated the intralaminar damage in double-lap, multi-bolt, composite joints with variable clearance using an implicit continuum damage mechanics model. Egan et al [6] simulated the bearing failure of dynamically-loaded countersunk composite fuselage joints using an explicit continuum damage mechanics model, in which the intralaminar strength criterion is included.…”

Section: Introductionmentioning

confidence: 99%

Progressive damage analysis of composite bolted joints based on continuum damage mechanics

2023

Preprint

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Based on continuum damage mechanics, progressive damage analysis of composite bolted joints with ply ratios of [(0o)30%/(±45o)60%/(90o)10%] and [(0o)70%/(±45o)20%/(90o)10%] is investigated in this paper. First of all, a new strength criterion is proposed to evaluate the intralaminar (fiber and matrix) and interlaminar damage initiation of composite materials. Then, an exponential material degradation model is adopted to describe the progressive damage process of composite materials. Finally, a continuum damage mechanics model is developed to predict the progressive damage behavior of composite bolted joints with different ply ratios. The predticted results have a good agreement with the experimental values. It is shown that low ±45o ply ratio induces the shear-out failure mode of composite bolted joints, decreasing the load carrying capacity.

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“…Such joints are utilized to create end-to-end continuity between frame profiles via splice plates which are mechanically fastened to their flanges and webs. However, the enhanced stress concentration around the bolt-hole decreases the load-carrying capability of the aircraft fuselage structures [1]. To overcome this disadvantage, special attention should be paid to investigate the mechanical behavior of CFRP-aluminum fuselage frames with bolted splice joints.…”

Section: Introductionmentioning

confidence: 99%

Flexural behavior of CFRP-aluminum fuselage frames with bolted splice joints

Lu²,

Liu³

2022

J. Phys.: Conf. Ser.

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Few work concerned on the flexural strength of carbon fiber reinforced plastic (CFRP)-aluminum fuselage frames with bolted splice joints used in aeronautical industry. To provide help for the design of CFRP aircraft strcutures, this paper investigated the flexural behavior of CFRP-aluminum fuselage frames with bolted splice joints experimentally. Firstly, CFRP-aluminum fuselage frames were fabricated with mid-span bolted splice joints. The joints comprised: reinforced or unreinforced aluminum splice plates bolted to the fuselage frames. The bolt diameters were 4.76mm and 6.35mm. Then, the effects of splice plate and bolt dimeter on flexural behavior of CFRP-aluminum fuselage frames with bolted splice joints were investigated through four-point bending test. It has been shown that the introduction of reinforced splice plate improves the structural load capacity. However, increasing bolt diameter lowers the flexural strength of CFRP-aluminum fuselage frames with bolted splice joints. This splice jointed structure is a representative part of the rear fuselage, and the experimental results will be commonly instructive for the the aeronautical CFRP joining applications.

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Finite element analysis of catastrophic failure of dynamically-loaded countersunk composite fuselage joints

Cited by 19 publications

References 27 publications

Experimental and numerical study on bearing failure of countersunk composite–composite and composite–steel joints

Experimental and numerical study on bearing failure of countersunk composite–composite and composite–steel joints

Progressive damage analysis of composite bolted joints based on continuum damage mechanics

Flexural behavior of CFRP-aluminum fuselage frames with bolted splice joints

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